From owner-freebsd-current@FreeBSD.ORG Thu May 22 10:18:18 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 285C637B401 for ; Thu, 22 May 2003 10:18:18 -0700 (PDT) Received: from sccrmhc01.attbi.com (sccrmhc01.attbi.com [204.127.202.61]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6E58643F85 for ; Thu, 22 May 2003 10:18:17 -0700 (PDT) (envelope-from eta@lclark.edu) Received: from [192.168.0.101] (12-224-152-126.client.attbi.com[12.224.152.126]) by attbi.com (sccrmhc01) with SMTP id <2003052217181600100ruruge>; Thu, 22 May 2003 17:18:16 +0000 From: Eric Anholt To: Anti In-Reply-To: <20030522093623.30915ed0.fearow@attbi.com> References: <200305201025.30296.jlido@goof.com> <200305201512.27174.jlido@goof.com> <20030522011014.GC27806@dragon.nuxi.com> <200305221010.59718.jlido@goof.com> <20030522093623.30915ed0.fearow@attbi.com> Content-Type: text/plain Organization: Message-Id: <1053624343.664.62.camel@leguin> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 Date: 22 May 2003 10:25:43 -0700 Content-Transfer-Encoding: 7bit cc: freebsd-current@freebsd.org Subject: Re: gcc/libm floating-point bug? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 May 2003 17:18:18 -0000 On Thu, 2003-05-22 at 07:36, Anti wrote: > > > I feel some will screem if we take away the ability to use > > > -march=pentium4 in places they know for sure will work. Unix is about > > > mechanisms, not policy. > > > > Well, we've got a compiler here with a broken mechanism. Deciding whether or > > not to act on it sounds like a policy decision to me. I just hope 5.1 > > doesn't get shipped with such an easy way to break stuff. > > > p4 should expand to "-march=pentium4 -mno-sse2" (could set it to pentium3, but > then people would see pentium3 being used when they specified p4 and think it's > a bug)... > > any educated person with a legit reason to use -march=pentium4 without disabling > sse2 can always add it to CFLAGS instead of setting it in CPUTYPE... > > don't see why anyone wouldn't want to put an end to all the breakage and bug > reports due to this when the fix is so simple and of no real harm... As of this morning, p4 CPUTYPE will to produce -march=pentium3. Your solution may have been more correct, but this is just a workaround until the next gcc gets imported. I hope the note in bsd.cpu.mk will be enough to warn people. -- Eric Anholt eta@lclark.edu http://people.freebsd.org/~anholt/ anholt@FreeBSD.org